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Title: Cyclotron resonance maser experiment in a nondispersive waveguide

Abstract

A cyclotron-resonance maser (CRM) oscillator experiment in which a spiraling electron beam interacts with a transverse electromagnetic wave in a nondispersive waveguide is presented. The experiment employs a low-energy low-current electron beam in a two-wire (Lecher type) waveguide. The microwave output frequency is tuned in this experiment by the axial magnetic field in the range 3.5--6.0 GHz. A second harmonic emission is observed at {approximately}7 GHz. CRM theory shows that in a free-space TEM-mode interaction, the gain might be canceled due to the equal and opposite effects of the axial (Weibel) and the azimuthal bunching mechanisms. This balance is violated in the large transverse velocity regime (V{sub {perpendicular}} {much_gt} V{sub z}) in which the experiment operates. The tunability measurements of the CRM oscillator experiment in the nondispersive waveguide are discussed in view of the CRM theory.

Authors:
; ;  [1]
  1. Tel Aviv Univ., Ramat Aviv (Israel). Faculty of Engineering [and others
Publication Date:
OSTI Identifier:
377841
Resource Type:
Journal Article
Resource Relation:
Journal Name: IEEE Transactions on Plasma Science; Journal Volume: 24; Journal Issue: 3; Other Information: PBD: Jun 1996
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; MASERS; CYCLOTRON RESONANCE; ELECTROMAGNETIC RADIATION; OSCILLATION MODES; TUNING; INTERACTIONS; HARMONIC GENERATION

Citation Formats

Jerby, E., Shahadi, A., and Drori, R. Cyclotron resonance maser experiment in a nondispersive waveguide. United States: N. p., 1996. Web. doi:10.1109/27.533084.
Jerby, E., Shahadi, A., & Drori, R. Cyclotron resonance maser experiment in a nondispersive waveguide. United States. doi:10.1109/27.533084.
Jerby, E., Shahadi, A., and Drori, R. Sat . "Cyclotron resonance maser experiment in a nondispersive waveguide". United States. doi:10.1109/27.533084.
@article{osti_377841,
title = {Cyclotron resonance maser experiment in a nondispersive waveguide},
author = {Jerby, E. and Shahadi, A. and Drori, R.},
abstractNote = {A cyclotron-resonance maser (CRM) oscillator experiment in which a spiraling electron beam interacts with a transverse electromagnetic wave in a nondispersive waveguide is presented. The experiment employs a low-energy low-current electron beam in a two-wire (Lecher type) waveguide. The microwave output frequency is tuned in this experiment by the axial magnetic field in the range 3.5--6.0 GHz. A second harmonic emission is observed at {approximately}7 GHz. CRM theory shows that in a free-space TEM-mode interaction, the gain might be canceled due to the equal and opposite effects of the axial (Weibel) and the azimuthal bunching mechanisms. This balance is violated in the large transverse velocity regime (V{sub {perpendicular}} {much_gt} V{sub z}) in which the experiment operates. The tunability measurements of the CRM oscillator experiment in the nondispersive waveguide are discussed in view of the CRM theory.},
doi = {10.1109/27.533084},
journal = {IEEE Transactions on Plasma Science},
number = 3,
volume = 24,
place = {United States},
year = {Sat Jun 01 00:00:00 EDT 1996},
month = {Sat Jun 01 00:00:00 EDT 1996}
}
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